Drill or mortising machine



Sept. 11, 1928. 1,683,763

R. E. DE WALT DRILL 0R moausme MACH NE Filed Sept. 17, 1925 2 Sheets-Sheet l Sept. 11, 1928.

R. E. DE WALT DRILL 0R MORTISING MACHINE Filed Sept. 17. 1925 2 Sheets-Shesac 2 m I. @t.

5 g \\\\\\\\\\\\\\\\\\i\\\\\\\\\ S 'ing rollers.

Patented Sent; 11 1, 1928. I I

wummY F DRILL on 'MORTISI G MACHINE.

nppi icati biimed Se tember 1%, ies." Serial No. 56,823.

' i The inveiitid reletes ,par'ticnlzirly to Inortisingj mechines ofthe hollow "chisel type andi the objects of the invention ire to providefe inachine'oi this type which will be of relatively simple and inexpensive construction; practical and efficient for the; in?- iposes intended, adjustehle ."to. meet various requirements and adapted to many uses.

These end other desirihle objects are zit tained byTcertagin novel features of construction, combinations and relations of tion end cleirns. v D j The drawings accompanying and form ng part of this specification illustrate the in- Figure 5 is j], de t ztched tletail View of one 7 turefrorn thebroad spirit zind-scop e' of the i '7 l i i v t of the eccentrically mounted carriage guid- Figure 1 6 substantially the plane of line 6 6 ofFig ure 1, showing particille -rly the Work table -vs pp r -p 1 One of the special featuresfof the inyeir 'tion is thatfthe framehfor the machine is i made from afllength of structural I-bearh 7 supported 11 right on a snitable stend such" I as the tripo legsS.

Sliding over the frontfleiiges ioit' this I beam column is a cerriage9 shown in Eigf ure 4 as grooved at 10 to receive the edges of: flanges, the carriage being confined in this relation by rearWa-rdlfeittending brzicltet's 11 detechahlyj bolted thereto at 121 and carrying at the rear, rollerslg, riding on the rear flanges. 'llheedgespf the front flanges 14 andrear flanges 15 maybe faced J off 1m remove any: burs and make them absolutely true ands'rho oth,, as indicated at Figures Qend i.

t A motor 16 is shown mounted 'on the upper portion of the carriage having an upright spindlel? carryingechuck 18 for 7 parts "as forth in the following spec ific:i

's ecrosssectional view es on stem of chisel 4-1 s held against rotation in'thefforw vilr'dly of thecz uriage set screw projecting lug-or arni21 at the lower end i The lrill carriage is; reciprocated 'verticelly: on the supportingstandard by a link 22 disposed Within the tront chennel of the I-hegiih "structure andentending up in back of the SllCl1Ilg"0L1I':1t1ge, the upper end of link 22 be ngrotlnded and eclwstahly eonne'cted with said c ari-i-zige by a hook bolt- 23 and ivotally connected 'atits "lower-f end at ilt withja pedal 25 which is 'pi vot ed at 26 to thevreztr leg of the tripod stand and the I heafnr zit 29.

' The spring connection described, acting through the pedal and link, supports the" drill. carriage normallyelevated, es ehown l igrircs l and 2;, hntfpressnr e on the pedal will lower r this' carriage to bring the drill into operative engageifientfwith the Work; As, soon as pressure on thepedzil is released, the spring irninediatelyflifts"the c317 rig re, carrying the i drill .free' of the Q Work I t i 1 v i s jsu d ported elevated position bye spring 27 connected by e chain 28 to the web'ot W 1? npported inthe present dis-f closure upon a bed 10rshe1f13O of generally L-sht pcd cross section h'iiyingijan upright. po tioning flange 31 at the bzick of the same, this Work support hiivihg a split col law 32 i adjustablyclamped by hi screw 33 post 34; This post and the clain'ping sleeve upon the forwardly projectingsupporting;

i t re shownes angnlzir cross section sothat the work table Will not turn upon'thejsame' and "the" post is shown secured to the eb oi lthe clamp 1n var ously rotated positions, hya nut idfi-eiigeged on thel exten ded stern of the postanddesigned to harvest cleinpn-g engagement with the rear face of the A,

Web, a 1 H he construction described enables the workteble to. be shifted forwardly or reap Wardly beneath the drill indthe table to be tilted to one side or the other to bring the \YQliC into variousdangular reliitions to the drill. i

The, table is shown equipped atthe rear itith vertically adjustable work clamps 37 haying downwardly directed ends extending.

forwardly over. the table, said clamps 1 being 7 scented in theirholding sockets 38 by; the clanip screws 39. i i W To take up for Wearend proyideiiorjfa cflese, (fitting s i e agem nt the, ci i riage on the standard, the rollers 13 are shownas journaled eccentrically on the studs 7 by which they are secured in brackets 11 so that they may be shifted toward or away "from the tracks over which they ride slight rotary adjustments of these mounting studs. The studs are held in adjusted position by the nuts 43. i I

Byreleasing the hook bolt 23 and then engagingthesame witliithe link 22 at diiferent points in the" length of said link, the car.-

riage may belchangedflto different working elevations to accommodatethe same to mate:

rial or different widths or heights.

To aid in the angular. adjustment of the table or work support, a scale 40' may be provide about the center of adjustment of the supporting bolt 34; and the sleeve 32 of the table may carry a pointer element to cooperate with said scale.

What is claimed is:

j 1. Ina machine of the cliaracterdisclosed,

' a frame comprisingan upright I-beam structurefa carriage vertically slidable over the front flanges of said I-beam and'havmg guide rollers riding over the rearward flanges oftheI-beam, a drill head on said carriage,

a stud'projecting forwardly from the web of theI-beanibeneath said drill head, a work table variously adjustable on said support ing stud and connections for operating the drill head carriage.

2. In a machine of the character disclosed,

a frame compr sing an upright I-beam struc ture, a carriage 'vertically slidable over the front flanges ofsaid I-beam and having guide' rollersriding over the rearward flanges ofithe' I-beani, adi'ill head on SitldflillllllgG, a

stud projecting forwardly from the web of theI-beam beneath said drill head, awork table variously adjustable on said supporting stud and connections for'operating the drill head carriage, including a pedal, a link engaged with said pedal and extend ng up between theflangesof the I-beam to the carriage and spring means acting on said connectioris tohold the carriage in a normally elevated position. '35 In a machine of the characterdisclosed,

an *I b'eam structure. a drill head slidably confined to and guided by the front and rear edge flanges ofsaid I-beam structure and an operating connection for said drill head disposed bet'weenthe flanges of the I-be'am,

l. Ina machineof the character disclosed, an I-beam structure, a drill head slidably confined to and guided by the front and rear f edge flanges of saidI-heam structure, an opcrating connection forsaid drill head disposedbetween the flanges of the I-beam and a work table having a pivotal mounting on the web of the I-beam'and a slidable adjustment toward and'awayfroin the flanges of theI beam: I

amachine of the character disclosed,

ing motor mounted on said carriage and means f F s n jlowering'the tool u riage on the column. j,

7. In a machine of tl echaracter disclosed,

an upright I-bean column, acarriago riding i on the front flanges of said column and liav ing g'uide' rollers engaging the rearward flanges of said column, a motor mountedon said carriage, atool carrying chuck operated thereby, a work table adjustably supported i on the column beneath the tool carriage, means for yieldingly supporting the tool'car riage upraised over the work table andman-j a ually operable means for'lowering the car L riage toward the work table.

8. In amachine of the character disclosed,

an upright I beamcolumn, a carriage riding on the front flanges of said column and having guide rollers engaging the rearward flanges of said column, a motor mounted on said carriage, a tool carrying chuck operated thereby, a ,work table 'adjustably sup ported on the column beneath the tool car? riage, means for yieldingly supporting the tool carriage upraised over the work table, I

manually operable means for lowering the carriage towardthe work table, a forwardly extending lug on the carriage provided with a guide for the tool, a tablehaving an up right guide flange at the back of the saine and provided with a split angular collar,

a.clamp screw fol-said collar and a stud of angular cross section engaged with said collar and pivotally secured in the web of the column forenabling the adjustments of the table aforesaid.

9. 'A machine comprising an I-bcam, a

head slidably mounted on? the I-beam," tlie head having guiding contact with thefor ward edges of the sideflanges of the I-1 beam, and adjustable rollerscarried the head and engaging the rear edgesotthe side flanges. i 1

10. A machine comprising a supporting column, a horizontal stud mounted (new column, said stud being rotatably adjust able,'a work table sli'tlably adjustable along said stud, and means for clamping the work tablein adjusted position. i l y In testimonywvhcreofl aflixiny signature. RAYMOND EL'DEWVALTfJ l 

